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LTC2991 PDF预览

LTC2991

更新时间: 2024-02-12 13:32:24
品牌 Logo 应用领域
Linear Systems 传感器温度传感器监视器
页数 文件大小 规格书
20页 221K
描述
Temperature Sensor and Dual Voltage Monitor with Alert Outputs

LTC2991 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:MSOP包装说明:TSSOP, TSSOP16,.19,20
针数:16Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:3.47可调阈值:NO
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-G16
JESD-609代码:e3长度:4.039 mm
湿度敏感等级:1信道数量:1
功能数量:1端子数量:16
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP16,.19,20封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):NOT SPECIFIED
电源:3.3 V认证状态:Not Qualified
座面最大高度:1.1 mm子类别:Power Management Circuits
最大供电电流 (Isup):1.5 mA最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):2.9 V标称供电电压 (Vsup):3.3 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.5 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3 mmBase Number Matches:1

LTC2991 数据手册

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LTC2995  
Temperature Sensor and  
Dual Voltage Monitor with  
Alert Outputs  
FEATURES  
DESCRIPTION  
The LTC®2995 is a high accuracy temperature sensor  
and dual supply monitor. It converts the temperature of  
an external diode sensor and/or its own die temperature  
to an analog output voltage while rejecting errors due to  
noise and series resistance. Two supply voltages and the  
measured temperature are compared against upper and  
lower limits set with resistive dividers. If a threshold is  
exceeded, the device communicates an alert by pulling  
low the correspondent open drain logic output.  
n
Monitors Temperature and Two Voltages  
n
Voltage Output Proportional to Temperature  
n
Adjustable Thresholds for Temperature and Voltage  
n
±±1° Remote Temperature Accuracy  
n
±ꢀ1° ꢁnternal Temperature Accuracy  
n
1.5% Voltage Threshold Accuracy  
n
3.5ms Update Time  
n
2.25V to 5.5V Supply Voltage  
n
Input Glitch Rejection  
n
Adjustable Reset Timeout  
The LTC2995 gives 1°C accurate temperature results  
using commonly available NPN or PNP transistors or  
temperaturediodesbuiltintomoderndigitaldevices. Volt-  
ages are monitored with 1.5% accuracy. A 1.8V reference  
outputsimplifiesthresholdprogrammingandcanbeused  
as an ADC reference input.  
n
220μA Quiescent Current  
n
Open Drain Alert Outputs  
n
Available in 3mm × 3mm QFN Package  
APPLICATIONS  
TheLTC2995providesanaccurate, lowpowersolutionfor  
temperature and voltage monitoring in a compact 3mm ×  
3mm QFN package.  
n
Network Servers  
n
Core, I/O Voltage Monitors  
n
Desktop and Notebook Computers  
Environmental Monitoring  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
n
TYPICAL APPLICATION  
Dual OV/UV Supply and Single OT/UT Remote Temperature Monitor  
VPTAT vs Remote  
Diode Temperature  
2.5V  
1.2V  
1.8  
1.6  
1.4  
1.2  
ASIC  
+
V
D
CC  
PS  
470pF  
0.1ꢀF  
TEMPERATURE  
SENSOR  
DS  
D
194k  
10.2k  
45.3k  
VH1  
LTC2995  
VL1  
VH2  
VL2  
4mV/K  
V
1.0  
0.8  
PTAT  
64.4k  
10.2k  
45.3k  
OT T > 125°C  
UT T < 75°C  
+10%  
SYSTEM  
MONITOR  
TO2  
TO1  
OV  
75 100  
125 150  
REMOTE DIODE TEMPERATURE (°C)  
–50 –25  
0
25 50  
–10%  
2995 TA01b  
UV  
V
VT2  
VT1  
GND TMR  
REF  
20k  
5nF  
20k  
140k  
2995 TA01a  
2995f  
1

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